| Range From | Range To | Organisation |
|---|---|---|
| 2001:1890:2021:4400:: | 2001:1890:2021:44ff:ffff:ffff:ffff:ffff | |
| 2001:1890:2021:4500:: | 2001:1890:2021:45ff:ffff:ffff:ffff:ffff | |
| 2001:1890:2021:4600:: | 2001:1890:2021:46ff:ffff:ffff:ffff:ffff | |
| 2001:1890:2021:4700:: | 2001:1890:2021:47ff:ffff:ffff:ffff:ffff | |
| 2001:1890:2021:4800:: | 2001:1890:2021:48ff:ffff:ffff:ffff:ffff | |
| 2001:1890:2021:4900:: | 2001:1890:2021:49ff:ffff:ffff:ffff:ffff | |
| 2001:1890:2021:4a00:: | 2001:1890:2021:4aff:ffff:ffff:ffff:ffff | |
| 2001:1890:2021:4b00:: | 2001:1890:2021:4bff:ffff:ffff:ffff:ffff | |
| 2001:1890:2021:4c00:: | 2001:1890:2021:4cff:ffff:ffff:ffff:ffff | |
| 2001:1890:2021:4d00:: | 2001:1890:2021:4dff:ffff:ffff:ffff:ffff |